Combined sludge-removing and desalting device for steam boilers



INVENTORS ATTORNEYS Jan. 22, 1957 HANS-MARTIN PAPE ET AL COMBINED sums EMOVING AND DESALTING DEVICE F STEAM BOILERS Filed June 12, 1955 HANS-MARTIN PAPE JOHANN SCHULZE 'gJa/QM 9 F IG.

iinited States Patent fl ice COMBINED SLUDGE-REMOVING AND DESALT- ING DEVICE FOR STEAM BOILERS Hans-Martin Pape, Bremen, and Johann Schulze, Osterholz-Scharmbeck, Germany Application June 12, 1953, Serial No. 361,356

8 Claims. (Cl. 137-244) In accomplishing the objects of the present invention 7 it was found desirable to combine a periodically operating sludge-removing and desalting device with a continuously operating desalting device whereby these two elements are combined into a single unit which is so constructed that whenever the closure element of the periodically-operating element is actuated cleaning of the throttle, or the throttles, of the continuously-operating element takes place automatically.

The invention will appear more clearly from the following detailed description when taken in connection with the accompanying drawing showing, by way of example, preferred embodiments of the inventive idea.

In the drawing:

Figure l is a section through a combined sludge-removing and desalting device constructed in accordance with the principles of the present invention.

Figure 2 is a similar-section through a differently constructed device.

Figure 3 is a similar section through a diflerent construction' Figure 4 is a similar section through yet another construction.

The device shown in Figure 1 consists of a casing 5 provided with an inflow passage 6 and outflow passages 7 and 8. A valve seat 9 is located between the passages 6 and 8; a desalting passage 9 is formed by a throttle it? located between the inflow passage 6 and the outflow passage 7.

A valve body 11 is adapted to engage the valve seat 9 and is carried by valve rod 12 which is actuated by a lever 13 and extends through a packing 14 and a stuffing box 15. The lever 13 is pivoted at 16 to the casing 5 and is held in the raised valve-closing position by a spring 17.

A pin 18 is adjustably mounted in the valve body 11' and extends into the throttling passage 9' in the open position of the valve.

it is apparent that the necessary operation is produced by the periodic sludge removal carried out by the valves 9, l1 and by the continuous desalting operation carried out by the throttling passage 9'. As shown in Figure 1., the passage 9 is located perpendicularly under the valve body 11. It is further apparent that the pin 18 may be conveniently adjusted so as toprovide a free flow through 2,778,375 Patented Jan. 22, 1957 24- is hollow and contains a tubular member 27 enclosing a throttling passage 28. The passage 28 is adapted to communicate with an inner chamber located in the member 25.

In this construction the periodic sludge removal takes place again through the quick-operating valve containing the valve body 24 and the valve seat 23. On the other hand the continuous desalting takes place through a noz- Zle-like throttling passage 28 which is located in the valve body 24 and which is in communication with the outflow passage 22. i

A pin 30 is adjustably mounted within the inflow passage Zl and is carried by the casing 20. The pin 30 extends perpendicularly to the valve body 24 and is located below that body. It is apparent that when the valve body 24 is moved downwardly to open the valve, the pin 3!) is projected into the passage 23, thereby cleaning that passage.

An auxiliary locking pin'iil is used to prevent idling of the boiler when it is switched off. The pin 31 is located within the extension 25 of the valve body 24 and is adapted to close the throttling passage 28. The pin 31 is connected with a piston 32 located within the chamber 29. A spring 33; extends between the piston 32 and the member 26. The chamber 29 is provided with a connection (not shown) so that the piston 32 and the pin 31 connected therewith are moved upwardly (looking in the direction of Figure 2) so as to open the passage 28 when sufiicient fluid pressure is supplied to the chamber 29 by the steam in the boiler or the boiler pump. On the other hand, when pressure in the chamber 29 drops the spring 33 will press against the piston 32 and the pin 31 will close the passage 28.

The construction shown in Figure 3 includes a casing 40 provided with an inflow. passage 41 and an outflow passage 42. An annular member 44 is carried by the casing 40 and is in communication with the chamber 43 'and the inflow passage 41. A valve seat 45 is located between the chamber 43 and the outflow passage 42.

A valve body 46 is connected with the valve rod 47 and is adapted to close and open the valve seat 45. The valve body 46 is provided with a throttlingpassage 43 which communicates with the outflow passage 42.

A reserve valve locking device is located in the casing 44 and includes a body 9 which may be held by a screw 5i). T he member 49 carries a pin 51 which is adapted to engage and clean the passage is when the valve body 46 is moved downwardly.

This arrangement has the advantage that when the reserve lock is operated to close the device, the means providing for continuous desalting will be locked also. The extent of movement of the locking body 49 in its axial direction may be conveniently limited by an adjustable stop. For that purpose the member E9 is connected with a spindle 51 carrying a screw-shaped body 52. The casing 40 is provided with an extension carrying a stop 54 which is engaged by the member 52.

The member 52 may be provided upon its circumference with a plurality of recesses $5 while the member 54 may carry a threaded pin 56 adapted to engage any one of the recesses 55. it is apparent that through this arrangement the required free cross-section of the throttling passage 48 may be adjusted at will. At the 1.!) same, time the result pt this arrangement is that each time when the reserve lock 49 is open the free cross-section of the throttling passage 48 is set automatically; 'it is merely necessary to adjust once the cross-section of the passage '48. w

It is apparent that the pin 56 secures the member 52 against turning.

The stop element 54 is shown as being firmly mounted upon the casing portion 53. It is apparent, however, that it is possible to make the member 54 adjustable with reference to the member 53. In the event that the member 54 is made adjustable the recesses 55 provided upon the circumference of the member 52 may be used effectively to set the extent of movement of the reserve lock 49 and of the pin 51 connected therewith.

The construction shown in Figure 4 includes a casing 60 which is provided with an inflow passage 61 and an outflow passage 62. An annular member 63 is in communication with the passage 61 and a chamber 64. A valve seat 65 extends between the chamber 54 and the outflow passage 62. The valve seat 65 cooperates with the valve body as which is carried by a valve rod 67.

The casing 63 .is connected by a bolt 68 with the casing 69 containing the spindle .78 of the reserve valve lock 71. It is apparent that this construction is somewhat similar to that of Figure 3. However, in the construction shown in Figure 4 a pin 72 has a threaded portion which is screwed into a sleeve 73 constituting part of the body 71 of the reserve lock. The pin 72 is connected with a member 74- .which encloses the ends of additional pins 75 projecting into passages formed in the valve body 66. It is apparent that the valve body 66 may be turned by means of the valve rod 67. The auxiliary pins 75 are in engagement with the member 74 but are movable axially in relation thereto.

It is thus apparent that when the valve rod 67 is turned the pin 72 will be moved somewhat out of the locking body 71 or will be moved toward that body depending on the direction of rotation of the shaft 57. As a result of this movement of the pin 72 the free cross-section of the throttling passage 76 will be extended or diminished.

It is apparent that the examples shown above have been given solely by way of illustration and not by way of limitation. For example, the automatic setting of the pin 36) of Figure 2 may also be applied to the construction shown in Figure l inthat the actuating piston 32 need not be mounted in the shaft 25 of the valve body 24 but may be located in the casing 5.

Furthermore, in the construction shown in Figure 2 the piston 32 need not be operated depending upon pressure of the boiler or the supply pump. The piston 32 and thus the pin 39 can be actuated manually at will by means of a compressed air or hydraulic conduit, or the like.

All such variations and modifications are to be included within the scope of the present invention.

What is claimed is:

1. A combined sludge-removing and desalting device comprising a valve casing having inlet andoutlet passages, a valve seat in said casing between said passages, a quickly closing valve body cooperating with said valve seat, means connected with said valve body for moving it away from said valve seat for sludge removing, means within said casing below said valve body forming a perpendicular throttling desalting passage communicating with said inlet passage, said casing having formed therein a second outlet passage communicating with said throttling passage, and a pin adjustably mounted on said valve body and movable therewith, said pin being located away from said throttling passage when the valve is closed and engaging said throttling passage when the valve is open for cleaning thethrottling passage.

2. A combined sludge-removingand desalting device for steam boilers, said device comprising a valve'casing having inlet and outlet passages, a valve seat in said casing between" said passages'fa quickly closing valve body cooperating with said valve seat, means connected with said valve body for intermittently raising it from said valve seat for sludge removing, means in said valve body forming a perpendicular throttling desalting passage communicating with said inlet and outlet passages, and a pin adjustably mounted in said casing and engaging said throttling passage when the valve is open for cleaning the throttling passage.

3. A combined sludge-removing and desalting device for steam boilers, said device comprising a valve casing having inletand outlet -pa ssages,a valve seat in said casing between said passages, a quickly closing valve body cooperating with said valve seat, means in said valve body forming a perpendicular throttling desalting passage communicating with said inlet and outlet passages, a pin adjustably mounted in said casing and engaging said throttling passage when the valve is open for cleaning the throttling passage, a hollow valve-actuating member connected with said valve body and movable therewith, another pin movably mounted in said member for opening and closing said throttling passage, a piston connected with said other pin, said valve-actuating member having formed therein a passage communicating with said casing and said pistonand supplying fluid under pres- I sure for maintaining open said throttling passage, and

a spring located within said member and engaging said piston for closing said throttling passage.

4. A combined sludge-removing and desalting device for steam boilers, said device comprising a valve casing having inlet and outlet passages, a valve seat in said casing between said passages, a quickly closing valve body cooperating with said valve seat, means connected with said valve body for intermittently raising it from said valve seat for sludge removing in said valve body forming a perpendicular throttling desalting passage communicating with said inlet and outlet passages, a reserve valve closure perpendicularly mounted in said casing under said valve body and adjacent to said inlet passage, and a pin mounted in said closure and engaging said throttling passage when the valve is open for cleaning the throttling passage.

5. A combined sludge-removing and desalting device for steam boilers, said device comprising a valve casing having inlet and outlet passages, a valve seat' in said casing between said passages, a quickly closing valve body cooperating with said valve seat, means connected with said valve body for intermittently raising it from said valve seat for sludge removing, means in said valve body forming a perpendicular throttling desalting passage communicating with said inlet and outlet passages, a reserve valve closureadjustably mounted in said casing under said valve body and adjacent to said inlet passage, a pin mounted in said closure and engaging said throttling passage when the valve is open for cleaning the throttling passage, means connected with said closure for moving the same relatively to said casing, and an adjustable stop limiting the movement ot said closure.

6. A combined sludge-removing and desalting device for steam boilers, said device comprising a valve casing having inlet and outlet passages, 21 valve seat in said casing betweensaid passages, a quickly closing valve body cooperating with said valve seat, means connected with said valve body for intermittently raising it from said valve seatfor sludge removing, means in said valve body forming a perpendicularthrottling desalting passage communicating with said inlet and outlet passages, reserve valveclosure adjustably mounted in said casing under said valve body and adjacent to said inlet passage, a pin mounted in said closure and engaging said throttling passage when the valve is open for cleaning the throttling passage, 3. spindle connected with said closure for moving the same relatively to said' casing, a screw-shaped member carried by said spindle and movable therewith, astop carried by said casing, and another pin carried by said step and adapted to engage said screw-shaped member.

7. A combined sludge-removing and desalting device for steam boilers, said device comprising a valve casing having inlet and outlet passages, a valve seat in said casing between said passages, a quickly closing valve body cooperating with said valve seat, means connected with said valve body for intermittently raising it from said valve seat for sludge removing, means in said valve body forming a perpendicular throttling desalting passage communicating with said inlet and outlet passages, a-

reserve valve closure adjustably mounted in said casing under said valve body and adjacent to said inlet passage, a pin mounted in said closure and engaging said throttling passage when the valve is open for cleaning the throttling passage, a spindle connected with said closure for moving the same relatively to said casing, a screw-shaped member carried by said spindle and movable therewith, an adjustable stop carried by said casing, and another pin carried by said stop, said screw-shaped member having a plurality of recesses formed therein, said other pin being adapted to engage any one of said recesses.

S. A combined sludge-removing and desalting device for steam boilers, said device comprising a valve casing having inlet and outlet passages, a valve seat in said casing between said passages, a quickly closing valve body cooperating with said valve seat, means connected with val e body for intermittently raising it from said valve seat for sludge removing, means in said valve body forming a perpendicular throttling desalting passage communicating with said inlet and outlet passages, a reserve valve closure perpendicularly mounted in said casing under said valve body and adjacent to said inlet passage, a pin threaded in said closure, a connecting member connected with said pin, and a second pin engaging said connecting member and said valve body, said second pin being movable axially relatively to said connecting member, the first-mentioned pin being adapted to engage said throttling passage when the valve is open for cleaning the throttling passage.

Hopkins Apr. 21, 1931 R0611 Oct. 21, 1952 

